The evolution of the spacesuit has been a steady progression of improvements since Leonov floated out of his Voskhod capsule in 1965 and became the first human to be exposed to the vacuum of space.

One is the Russian Orlan type, which was first used in December 1977. The Orlan is a one-piece spacesuit. The "backpack" opens like a fridge door, allowing the spacewalker to climb inside.